<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>实例设置 "item1" 跨越 3 列</title>
    <style>
        .grid-container {
            display: grid;
            grid-template-columns: auto auto auto auto auto auto;
            grid-gap: 10px;
            background-color: #2196F3;
            padding: 10px;
        }

        .grid-container>div {
            background-color: rgba(255, 255, 255, 0.8);
            text-align: center;
            padding: 20px 0;
            font-size: 30px;
        }

        .item1 {
            grid-column: 1 / span 3;
        }
    </style>
</head>

<body>

    <h1>grid-column 属性</h1>

    <p>使用 <em>grid-column</em> 属性定义了网格元素列的开始和结束位置。</p>
    <p>以下实例设置 "item1" 跨越 3 列：</p>

    <div class="grid-container">
        <div class="item1">1</div>
        <div class="item2">2</div>
        <div class="item3">3</div>
        <div class="item4">4</div>
        <div class="item5">5</div>
        <div class="item6">6</div>
        <div class="item7">7</div>
        <div class="item8">8</div>
        <div class="item9">9</div>
        <div class="item10">10</div>
        <div class="item11">11</div>
        <div class="item12">12</div>
        <div class="item13">13</div>
        <div class="item14">14</div>
        <div class="item15">15</div>
    </div>

</body>

</html>